Screw-driver.



S. TAS-(RCS.

SCREWDRIVER.

APPLIQATIGN ,man Ama. i914.

Lg Patented May u,- i915.

Gigi/Mamas 5 4 '4 in providing; one

'auf' Jl... 'El su.. vgl. .s

STE'V TAKCS, DE NEWARK, HXQ.

SCREfW-DRTJ riseoes.

eppiies'iion slee .august ieri. serial Q serene.

T0 @ZZ vii/'mm may conce/m:

Be it known that S'rnvn Tnrirrom e. suhjeet of Hungary, residing et "Newark, in the county of Licking and Stai-e of Chio, have invented Certain new und useful improvements in Screw-Drivers, of which the iollowing is zi. specification.

My invention relates to screw drivers end aims particularly to provide e. structure of screw driver wherein the screw to be driven may he removably attnohed to the chiselshaped end thereof. it requentiy happens that it becomes necessary to place a sorevT where it is extremely diilioult to hold it with one hond :ind use the screw driver with other. 'lf o this end, my invention may he used to apply the screw with Comparative ease.

The main object of my invention resides in the provision of :ipeir of gripping jews so nrrzii'lged that they may be moved to e position adjacent the chisel-shaped end of the body and also may be moved towiird each other into .gripping engagement with n. screw herd.

Another object of roy invention resides structure `for moving the army from the chisele shaped end and :i suppiementel structure for moving the jews toward erich other. in this manner the screw driver may he adapted -for use in connection with screws having heads varying in size o e considn erziblo efieit.

My invention also resides notion of parts :is vmay parent and sitter s detailed de t the sieoompunj-fing; sheet 1 #swings7 in which similar ohoreoters oi.: 'reference designate corresponding; parte, and which:

Figure .1r is o, View of improved tvneoi screw driver showing the jews in their resi-most position, 2 is o vievv of the structure shown in and teilen :it right :ingles thereto, Fi 3 is a. view similar to Fig. E, but showing the flevfs moved totlieir ou'germost position, Fig. is e vieviT similar to Fig. 3 but showing' t1 ese jews moved toward each other, Fig. 5 is i view similar to Fig. l. showing the jews in grin ping engagement with :t serewvhezid, 6 is o. central vertical section of thestrueture shown in Fig. 5 with the screw removed, and, Fig. is e cross 'section taken or; line -T or Fig. '5.

jaws towerd or the combier he ey Sori..

. is shown :it 6. in order to move these jews longitudinally of the body member, l have provided en enveloping sieeveimemher to which the inner .ends of 'the Shanks of the jews' 5 are rigidly attached es by rivets slioivn at 9. ln this manner, movement lon* gitudinally of the body l. o' the sleeve 8 esuses a corresponding movement of the jews themselves sliding Within' the grooves fi. In order that the jews 5 may be forced toward each other, l' have provided a seeondl sleeve member 1G, this sleeve member heing also slideble on the body l and being ymounted thereon between the chisel shaped end and the sleeve 8. lriovement of the second sleeve member l0 toward the end @,vis limited by the shoulders l1, these shoulders lbeing` primarily for the purpose of preventing seeidentel removal oi these sleeve members. ln order that the jews may be further moved toward erich other, have provided the end of the second sleeve member i0 nearest the chisel-shaped end of the body l with eem format-ions es is indi.- oeted 1Q from which it wiil be appa-rent that. e rotative movement thereof ivili so 'twin theresuit desired. it will thus be op )i srent that lhsve provided e type of screw driver which may .be used e ineens of eeoess to very obstruoted places. Further, this screw driver may be used in the. ordi nary manner. and not interfere with its operation by simply jmening the peras to their release position as is shown in Fig. i.

The manner of usinginy device is es follows: A. serev: of any preferred type suoli, for instance, :is is shown et 13 is provided. This serew then has its slotted head placed in position with the chisel-'shaped end 2 and the sleeve i moved forward to theposition shown in Fig. 3. This forward movement also Causes lf'orwerd movement of the second sleeve member l0 and by a rotative o'sliei' into screw bead..

movement thereof, the jews may be brought into the desired gripping engagement with the screw head. It Will also be readily apparent that a Simple forwa'el movement of the second. sleeve member, as shown in Fig. 3, may also cause n movemen' o'lie jow ends owal'd each o'he' if ciesii'ed.

liz/*ioni claim, is:

l. A screw driver oompx'ising a body inc-grober a pair of jaws movable toward. and away from lle chisel-Shaped end of Said bodyl if, eleeve movable longitudinally' on said body? and com formations carried by the end4 of said sleeve nearest the chisel slmpedreiid ol" said body and arranged to engage said jews by rotative movement of siicl sleeve to move said jaws toward each gripping engagement with a 2. A screw driver eomprising a, body membera o pair o jews movable zownrd and away from the chisel shaped end of seid body, a sleeve sliable longitudinally on said body und allizmged to embrace Said jaws, and @am forn'ietions carried by the ond of seid slee-Ve nearefilt the Chisel shapedv end of sold body :md oimel by cul/ting out portions, of seid slee-ve between its ends; zit dinmorioally opposite. pointsthereby leaving 'projecting prongs, said formations' being' arranged to engage seid jews by rote tive movemen of said sleeve o move said jaws toward eneh other into gripping e11- gagement with e, screw heed.

In testimony whereof alix in. presence of two Witnesses.

STEV E 'ITA HAUS. 

